Engineering Fundamentals: An Introduction to Engineering
Engineering Fundamentals: An Introduction to Engineering
6th Edition
ISBN: 9780357112311
Author: Saeed Moaveni
Publisher: Cengage Learning US
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Chapter 11, Problem 43P
To determine

Compare the heat transfer rates through layers of human skin, human muscle, and human fat tissue.

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A long steel I-beam used in bridge construction has a length of 15.0 m. The beam may be exposed to temperatures as low as  −22°C  in the winter and as high as  33°C  in the summer. What is the difference in length of the beam between these two temperature extremes? (Give the absolute value of the difference. Enter your answer in mm.)
A dual-pane window in a house is composed of two parallel panes of glass, each with an area of 2.23 m². Each pane of glass is 3.10 mm thick and the space between the panes is 12.5 mm thick and is filled with argon. (a) Calculate the heat flow through the window if the indoor temperature is 18.3°C and the outdoor temperature is -20.6°C (this is about -5°F). (b) Determine the temperature on the inside of the pane (this is in the argon-dilled region) closest to the outside of the house.
Steel plates (AISI 1010) with a thickness of 6 mm and sides with a length L = 0.49 m, are transported at the exit of a heat treatment process and simultaneously cooled by atmospheric air with a speed u∞ = 5.24 m/s and T ∞ = 23.3°C in parallel flow over the plates. For an initial plate temperature of Ti = 327°C, what is the heat transfer rate in W leaving the plate? Considering that the air velocity is much greater than the plate velocity, what is the corresponding temperature change rate for that instant in K/s?

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Engineering Fundamentals: An Introduction to Engineering

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